Periapt

Of all people who ever lived, the Persians were perhaps most remarkable for their unshaken credulity in amulets, spells, periapts, and similar charms, framed, it was said, under the influence of particular planets, and bestowing high medical powers, as well as the means of advancing men's fortunes in various manners.

[Aaron’s Breastplate] was a decoration, from the costliness of its nature; a periapt, for it was suspended round his neck by golden chains; a talisman, for it ensured the divine protection to the tribes whose names were thereon engraven.

The occipital bone of an asses head in a skin is also a good periapt.

The passage in the Greek liturgy of St. Chrysostom...became a charm for intractable hemorrhage (written on the part affected or worn as a periapt)

Virility is sustained, preserved, even recaptured, by man's ingenuities, by exotic foods and drinks, by rare herbal compounds, by fantastical manipulations, goetic periapts.

That is the secret of this vault, Miss Thornberry. It is his living tomb, and the periapt you wear around your neck is his epitaph.